PLEASE NOTE: Requires additional hardware!
This app is only interesting for those who can program a microcontroller with ADC and serial Bluetooth module (e.g. RN-42). Starter version, runs full-featured, but only 5 times. Find the full version here: http://play.google.com/store/search?q=pub:hdop
This app reads a value via Bluetooth. This can be a voltage, a temperature, a pressure or whatever. This value can be displayed, observed and recorded.
The observation method is similar to a traffic light. It makes the colors green, yellow and red from specific value ranges (and similar to a traffic light, green means "OK", red means "ALERT", and yellow is the transition state).
You can adjust the ranges for "Green" and "Yellow", depending on your requirements. Tests are as follows: Value within green range? Display shows green. Else, value within yellow range? Display shows yellow. Else, display shows red and - if enabled - an alarm is triggered.
Also adjustable is the response time so that a value change does not lead to a color change immediately. Only a certain duration of value changes lead to color changes. This prevents single peaks from triggering color flicker.
"Red" can trigger an alarm using a siren (plus vibration), using Text to Speech with text you can edit in settings, or by playing an audio file from SD Card. You can set a fixed volume, or use the media volume.
Rotating the display starts a special display mode, which is configured in settings: You can multiply the "raw" value by a factor and you can add an offset. The number of decimal places as well as the digit size are adjustable. Finally, you can add a unit (e.g. "Volt") and toggle min/max display. Optionally, the displayed value can be read out at regular intervals.
A click on the display shows some statistics.
There is also a log-file option with the possibility to visualize the recorded data as diagram (when the display is rotated).
The maximun recording time is 10 hours. The log file (log.csv) is located in the directory "BT Multi Monitor" on the SD Card and is overwritten each time the app is started. As an alternative, several log files (date-time.csv) are also possible.
In addition log files can be processed by programs like "Excel&Co".
Bluetooth device selection: The selection can be limited to device names containing a particular string, defined in settings. If only one device is available, it is selected automatically.
Technical info
- Bluetooth profile: SPP (Serial Port Profile)
- Protocol: ASCII (human readable).
The program sends a '?' (0x3f) to make request for a 12Bit ADC value (0... 4095). Then the program expects 4 decimal digits to be returned (timeout 1s).
请注意：需要额外的硬件！
这个程序是唯一感兴趣的那些谁可以设定一个微控制器，ADC和串口蓝牙模块（如RN-42）。 Starter版本，运行全功能的，但只有5次。在这里找到完整版本：http://play.google.com/store/search?q=pub:hdop
这个应用程序通过蓝牙读取一个值。这可以是一个电压，温度，压力或其他方式。这个值可以被显示，观察和记录。
观察方法类似于一个红绿灯。它使颜色绿色，黄色和红色的特定值范围（和类似交通灯，绿色表示“OK”，红色表示“警报”，而黄色是过渡状态）。
您可以调整的范围为“绿色”和“黄色”，根据您的要求。测试如下：在绿色范围值？显示屏将显示绿色。否则，值内黄色范围内？显示屏显示黄色。否则，显示屏显示红色 - 如果启用 - 触发警报。
也就是可调响应时间，这样的数值变化不会导致颜色变化立刻。的值更改仅在一定时间引起颜色变化。这可以防止单峰从触发色闪烁。
“红”可以，或打从SD卡音频文件使用警报器（加振动），使用文本到语音与文字你可以在设置中编辑触发报警。您可以设置一个固定的量，或使用媒体音量。
旋转显示屏开始一个特殊的显示模式，其配置在设置：您可以通过一个系数乘以“原始”的价值，你可以添加一个偏移量。小数位的数字，以及数字大小可调。最后，你可以添加一个单元（例如，“伏”）和切换最小/最大显示。任选地，所显示的值可以以规则的间隔被读出。
显示屏上的点击显示了一些统计数据。
还有的可能性日志文件选项的可视化记录的数据为图（显示器旋转时）。
的最长录音时间为10小时。日志文件（log.csv）位于在目录“BT多显示器”上的SD卡，并在应用程序每次启动时都会覆盖。作为替代方案，多个日志文件（日期time.csv）也是可能的。
另外的日志文件都可以用“Excel的事务所”程序进行处理。
蓝牙设备选择：选择可以被限制到包含特定字符串，在设置中定义的设备名称。如果只有一台设备是可用的，它会自动选择。
技术信息
- 蓝牙模式：SPP（串行端口配置文件）
- 协议：ASCII码（人类可读）。
该程序发送一个“？” （的0x3F）做出要求一个12位的ADC值（0 ... 4095）。然后程序预计4个十进制数字被返回（超时1秒）。

- Bluetooth status gets restored on exit.